/*
 * 	   Created by Daniel Nadeau
 * 	   daniel.nadeau01@gmail.com
 * 	   danielnadeau.blogspot.com
 *
 * 	   Licensed to the Apache Software Foundation (ASF) under one
       or more contributor license agreements.  See the NOTICE file
       distributed with this work for additional information
       regarding copyright ownership.  The ASF licenses this file
       to you under the Apache License, Version 2.0 (the
       "License"); you may not use this file except in compliance
       with the License.  You may obtain a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

       Unless required by applicable law or agreed to in writing,
       software distributed under the License is distributed on an
       "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
       KIND, either express or implied.  See the License for the
       specific language governing permissions and limitations
       under the License.
 */

package com.echo.holographlibrary;

import java.text.NumberFormat;
import java.util.ArrayList;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region;
import android.graphics.drawable.NinePatchDrawable;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import br.com.android.financas.R;

public class BarGraph extends View {

	private ArrayList<Bar> points = new ArrayList<Bar>();
	private Paint p = new Paint();
	private Rect r;
	private boolean showBarText = true;
	private int indexSelected = -1;
	private OnBarClickedListener listener;
	private Bitmap fullImage;
	private boolean shouldUpdate = false;
	private boolean horizontal=false;

	public BarGraph(Context context) {
		super(context);
	}

	public BarGraph(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public void setShowBarText(boolean show){
		showBarText = show;
	}

	public void setBars(ArrayList<Bar> points){
		this.points = points;
		postInvalidate();
	}

	public ArrayList<Bar> getBars(){
		return this.points;
	}

	public void clearBars(){
		this.points.clear();
		postInvalidate();
	}

	public void setHorizontal(boolean horizontal) {
		this.horizontal = horizontal;
	}

	public void setShouldUpdate(boolean shouldUpdate) {
		this.shouldUpdate = shouldUpdate;
	}

	public void onDraw(Canvas ca) {

		if(!horizontal){

		if (fullImage == null || shouldUpdate) {
			fullImage = Bitmap.createBitmap(getWidth(), getHeight(), Config.ARGB_8888);
			Canvas canvas = new Canvas(fullImage);
			canvas.drawColor(Color.TRANSPARENT);
			NinePatchDrawable popup = (NinePatchDrawable)this.getResources().getDrawable(R.drawable.popup_black);

			float maxValue = 0;
			float padding = 7;
			int selectPadding = 4;
			float bottomPadding = 40;

			float usableHeight;
			if (showBarText) {
				this.p.setTextSize(40);
				Rect r3 = new Rect();
				this.p.getTextBounds(NumberFormat.getCurrencyInstance().getCurrency().getSymbol(), 0, 1, r3);
				//this.p.getTextBounds("$", 0, 1, r3);
				usableHeight = getHeight()-bottomPadding-Math.abs(r3.top-r3.bottom)-26;
			} else {
				usableHeight = getHeight()-bottomPadding;
			}


			p.setColor(Color.BLACK);
			p.setStrokeWidth(2);
			p.setAlpha(50);
			p.setAntiAlias(true);

			canvas.drawLine(0, getHeight()-bottomPadding+10, getWidth(), getHeight()-bottomPadding+10, p);

			float barWidth = (getWidth() - (padding*2)*points.size())/points.size();

			for (Bar p : points) {
	        	maxValue += p.getValue();
	        }

			r = new Rect();

			int count = 0;
			for (Bar p : points) {
				r.set((int)((padding*2)*count + padding + barWidth*count), (int)(getHeight()-bottomPadding-(usableHeight*(p.getValue()/maxValue))), (int)((padding*2)*count + padding + barWidth*(count+1)), (int)(getHeight()-bottomPadding));

				Path path = new Path();
				path.addRect(new RectF(r.left-selectPadding, r.top-selectPadding, r.right+selectPadding, r.bottom+selectPadding), Path.Direction.CW);
				p.setPath(path);
				p.setRegion(new Region(r.left-selectPadding, r.top-selectPadding, r.right+selectPadding, r.bottom+selectPadding));

				this.p.setColor(p.getColor());
				this.p.setAlpha(255);
				canvas.drawRect(r, this.p);
				this.p.setTextSize(20);
				canvas.drawText(p.getName(), (int)(((r.left+r.right)/2)-(this.p.measureText(p.getName())/2)), getHeight()-5, this.p);
				if (showBarText){
					this.p.setTextSize(40);
					this.p.setColor(Color.WHITE);
					Rect r2 = new Rect();
					this.p.getTextBounds("$"+p.getValue(), 0, 1, r2);
					popup.setBounds((int)(((r.left+r.right)/2)-(this.p.measureText("$"+p.getValue())/2))-14, r.top+(r2.top-r2.bottom)-26, (int)(((r.left+r.right)/2)+(this.p.measureText("$"+p.getValue())/2))+14, r.top);
					popup.draw(canvas);
					canvas.drawText("$"+p.getValue(), (int)(((r.left+r.right)/2)-(this.p.measureText("$"+p.getValue())/2)), r.top-20, this.p);
				}
				if (indexSelected == count && listener != null) {
					this.p.setColor(Color.parseColor("#33B5E5"));
					this.p.setAlpha(100);
					canvas.drawPath(p.getPath(), this.p);
					this.p.setAlpha(255);
				}
	        	count++;
	        }
			shouldUpdate = false;
		}

		ca.drawBitmap(fullImage, 0, 0, null);
		}else
			onDrawHorizontal(ca);

	}


	public void onDrawHorizontal(Canvas ca) {

		if (fullImage == null || shouldUpdate) {
			fullImage = Bitmap.createBitmap(getWidth(), getHeight(), Config.ARGB_8888);
			Canvas canvas = new Canvas(fullImage);
			canvas.drawColor(Color.TRANSPARENT);
			NinePatchDrawable popup = (NinePatchDrawable)this.getResources().getDrawable(R.drawable.popup_black);

			float maxValue = 0;
			float padding = 7;
			int selectPadding = 4;
			float bottomPadding = 40;
			float leftPadding = 140;
			float rightPadding = 140;

			float usableHeight;
			float usableWidth;
			if (showBarText) {
				this.p.setTextSize(40);
				Rect r3 = new Rect();
				this.p.getTextBounds(NumberFormat.getCurrencyInstance().getCurrency().getSymbol(), 0, 1, r3);
				//this.p.getTextBounds("$", 0, 1, r3);
				usableHeight = getHeight()-bottomPadding-Math.abs(r3.top-r3.bottom)-26;
				usableWidth = getWidth()-leftPadding-rightPadding-Math.abs(r3.right-r3.left)-26;
			} else {
				usableHeight = getHeight()-bottomPadding;
				usableWidth = getWidth()-leftPadding-rightPadding;
			}


			p.setColor(Color.BLACK);
			p.setStrokeWidth(2);
			p.setAlpha(50);
			p.setAntiAlias(true);

			//canvas.drawLine(leftPadding, 0, leftPadding, getHeight(), p);

			float barWidth = (getHeight() - (padding*2)*points.size())/points.size();
			barWidth=barWidth-(barWidth/2);
			for (Bar p : points) {
				if(maxValue<p.getValue())
					maxValue = p.getValue();
	        }

			r = new Rect();

			int count = 0;
			for (Bar p : points) {

				//INFORMACOES DA BARRA
				int left=(int) leftPadding;
				//int right=(int) (getWidth()-leftPadding-(usableWidth*(p.getValue()/maxValue))+leftPadding);
				int right=  (int)((getWidth()*(p.getValue()/maxValue))+leftPadding) ;
				int top=(int)((padding*2)*count + padding + barWidth*count);
				int bottom=(int)((padding*2)*count + padding + barWidth*(count+1));
				//cria as barras
				r.set(left, top,right , bottom);

				Path path = new Path();
				path.addRect(new RectF(r.left-selectPadding, r.top-selectPadding, r.right+selectPadding, r.bottom+selectPadding), Path.Direction.CW);
				p.setPath(path);
				p.setRegion(new Region(r.left-selectPadding, r.top-selectPadding, r.right+selectPadding, r.bottom+selectPadding));

				this.p.setColor(p.getColor());
				this.p.setAlpha(255);
				canvas.drawRect(r, this.p);
				this.p.setTextSize(30);
				//coloca as labels
				Rect rt=new Rect();
				this.p.getTextBounds(p.getName(), 0, p.getName().length(), rt);
				int yText=(int)(((bottom+top)/2)+(rt.height()/2));
				canvas.drawText(p.getName(),0 ,yText , this.p);

				if (showBarText){
					this.p.setTextSize(35);
					this.p.setColor(Color.WHITE);
					Rect r2 = new Rect();
					String valor=NumberFormat.getCurrencyInstance().format(p.getValue());
					this.p.getTextBounds(valor, 0, 1, r2);
					float tValor=this.p.measureText(valor);

					int xText;
					//coloco o texto dentro da barra
					if((right-left)>tValor ){
						//xText= (int)((right/2)-(tValor/2));
						float nLeft=left+tValor;
						float sobra=(right-nLeft)/2;
						if((tValor/2)<sobra)
							xText=(int)(left+sobra-(tValor/2));
						else
							xText=(int)(left+sobra);

					}else{
						xText= (int)(((getWidth()-right)/2)-(tValor/2)+right);
						this.p.setColor(Color.BLACK);
					}

					canvas.drawText(valor, xText, yText , this.p);
				}
				if (indexSelected == count && listener != null) {
					this.p.setColor(Color.parseColor("#33B5E5"));
					this.p.setAlpha(100);
					canvas.drawPath(p.getPath(), this.p);
					this.p.setAlpha(255);
				}
	        	count++;
	        }
			shouldUpdate = false;
		}

		ca.drawBitmap(fullImage, 0, 0, null);

	}

	@Override
	public boolean onTouchEvent(MotionEvent event) {

	    Point point = new Point();
	    point.x = (int) event.getX();
	    point.y = (int) event.getY();

	    int count = 0;
	    for (Bar bar : points){
	    	Region r = new Region();
	    	r.setPath(bar.getPath(), bar.getRegion());
	    	if (r.contains((int)point.x,(int) point.y) && event.getAction() == MotionEvent.ACTION_DOWN){
	    		indexSelected = count;
	    	} else if (event.getAction() == MotionEvent.ACTION_UP){
	    		if (r.contains((int)point.x,(int) point.y) && listener != null){
	    			listener.onClick(indexSelected);
	    		}
	    		indexSelected = -1;
	    	}
		    count++;
	    }

	    if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_UP){
	    	shouldUpdate = true;
	    	postInvalidate();
	    }



	    return true;
	}

	public void setOnBarClickedListener(OnBarClickedListener listener) {
		this.listener = listener;
	}

	public interface OnBarClickedListener {
		abstract void onClick(int index);
	}
}
